[Kst-plot/kst] 74bf39: Update desktop files to have correct categories.

[Barth Netterfield]

  Branch: refs/heads/master
  Home:   https://github.com/Kst-plot/kst
  Commit: 74bf39e1013256d7920223e19bc737b897d0dc69
      https://github.com/Kst-plot/kst/commit/74bf39e1013256d7920223e19bc737b897d0dc69
  Author: Barth Netterfield <netterfield at astro.utoronto.ca>
  Date:   2017-11-22 (Wed, 22 Nov 2017)

  Changed paths:
    M src/kst/kst2.desktop

  Log Message:
  -----------
  Update desktop files to have correct categories.